名校
1 . 在四棱锥
中,侧面
⊥底面
,底面
为直角梯形,
//
,
,
,
,
为
的中点.
(Ⅱ)若PC与AB所成角为
,求
的长;
(Ⅲ)在(Ⅱ)的条件下,求二面角F-BE-A的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639bec6242a4b3f7bfb4b7033a67328c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2682f3f3f0f72c893b99073bcac83ff2.png)
(Ⅱ)若PC与AB所成角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
(Ⅲ)在(Ⅱ)的条件下,求二面角F-BE-A的余弦值.
您最近一年使用:0次
2018-05-03更新
|
5074次组卷
|
14卷引用:2019届天津市第一中学、益中学校高三年级四月考试数学(文)试题
2019届天津市第一中学、益中学校高三年级四月考试数学(文)试题2020届天津市第四中学高三年高考模拟(4月份)数学试题浙江省诸暨中学2017-2018学年高一下学期期中考试数学试题(已下线)【新东方】杭州高二数学试卷252山东省滕州一中2019-2020学年高一下学期数学期末测试题江西省赣州市石城县石城中学2019-2020学年高二下学期月考数学(理)试卷山东济南市历城第二中学2020-2021学年高二上学期开学考试数学试题(已下线)专题8.8 立体几何综合问题(练)-2021年新高考数学一轮复习讲练测(已下线)专题8.8 立体几何综合问题(练)- 2022年高考数学一轮复习讲练测(新教材新高考)四川省崇州市怀远中学2022-2023学年高三上学期开学考试数学(理科)试题四川省泸县第一中学2022-2023学年高三下学期开学考试数学(理)试题山东省实验中学2023-2024学年高二上学期开学数学试题(已下线)高二数学上学期开学摸底考试卷(人教A版2019)-2022-2023学年高二数学考试满分全攻略(人教A版2019选择性必修第一册)云南省昆明市第一中学2023-2024学年高一下学期期中考试数学试卷
2 . 如图,三棱柱
中,
平面
,
,
,以
,
为邻边作平行四边形
,连接
,
.
![](https://img.xkw.com/dksih/QBM/2019/6/18/2228202257883136/2228360699060224/STEM/399137f19b2a4eae86605d5cce7ca05a.png?resizew=236)
(1)求证:
平面
;
(2)若二面角
为
.
①求证:平面
平面
;
②求直线
与平面
所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ecf072589c0f901d92f6bda111d841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/716c23a7fa2d53cc0da998daaf06423a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2eb89294b31ffdd2680b4361e8994d7.png)
![](https://img.xkw.com/dksih/QBM/2019/6/18/2228202257883136/2228360699060224/STEM/399137f19b2a4eae86605d5cce7ca05a.png?resizew=236)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5a9a167b84baa36462851eecfb6bb2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b7b7793d29d66dfdd89e7a6564a35c.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e018d1504632eb949c1b51e7f58b62f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
①求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89c19ac59727b522b2854176871a9ee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfb3f0b5d8bf98eeff66f43b7dcbb4be.png)
②求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfb3f0b5d8bf98eeff66f43b7dcbb4be.png)
您最近一年使用:0次
2018-04-01更新
|
870次组卷
|
4卷引用:天津市十二重点中学2018年高三毕业班联考数学(文)试题
天津市十二重点中学2018年高三毕业班联考数学(文)试题【全国百强校】天津市实验中学2019届高三第六次阶段考数学(文)试题2019届天津市耀华中学高三下学期第二次校模拟考试数学(文)试题(已下线)专题17 立体几何(解答题)-2020年高考数学母题题源解密(天津专版)
名校
3 . 如图,在直三棱柱
中,
是
的中点,
是
的中点.
与
所成的角;
(2)求证:
;
(3)求二面角
的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdfcc3db96b8ee87b5023cbf96f2fa65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf988e2ef75c0df849594e07f86c76b.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74682b0dddedd67e31b3ecae3304559d.png)
您最近一年使用:0次
2018-06-18更新
|
741次组卷
|
5卷引用:天津市耀华中学2018届高三上学期第一次月考数学(文)试题1
天津市耀华中学2018届高三上学期第一次月考数学(文)试题1(已下线)《高频考点解密》—解密15 空间中的平行与垂直(已下线)解密14 空间中的平行与垂直-备战2018年高考文科数学之高频考点解密(已下线)解密14 空间中的平行与垂直 (讲义)-【高频考点解密】2021年高考数学(理)二轮复习讲义+分层训练单元测试B卷——第八章?立体几何初步
名校
解题方法
4 . 如图所示,在三棱锥
中,△
,△
都是等边三角形,且
,则二面角
的大小为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2823bdb03fbdacb513498a41ac63b3d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/753a64115d3ba7e6bb835b63e39fbdd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ac5e13622afab5e9f8603afe42356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40447a6866172f871f2f186107d3860a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e5d432c7b5cf198b85457ed30c8d19.png)
您最近一年使用:0次
2018-01-10更新
|
490次组卷
|
2卷引用:天津经济技术开发区第一中学2023-2024学年高一下学期(强基)6月月考数学试卷
真题
5 . 如图,在五面体ABCDEF中,四边形ADEF是正方形,FA⊥平面ABCD,BC∥AD,CD=1,AD=
,∠BAD=∠CDA=45°.
(Ⅰ)求异面直线CE与AF所成角的余弦值;
(Ⅱ)证明CD⊥平面ABF;
(Ⅲ)求二面角B-EF-A的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(Ⅰ)求异面直线CE与AF所成角的余弦值;
(Ⅱ)证明CD⊥平面ABF;
(Ⅲ)求二面角B-EF-A的正切值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/0e3aca8b-b0be-445a-84c6-d09b1aee88d7.png?resizew=113)
您最近一年使用:0次
名校
6 . 如图,边长为
的正方形
与梯形
所在的平面互相垂直,其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895c5f4677e1c5eacc0d5690486a9796.png)
为
的中点.
(1)证明:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求二面角
的正切值
(3)求
与平面
所成角的余弦值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895c5f4677e1c5eacc0d5690486a9796.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d164bad7471238abbf0be80c5c8e88a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280247d7df395bb9ea78c51e67b458d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d87b527147cb8dbb475bcefc0da2e6d.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/19/2e3bcdc8-2b11-4707-b1e9-6cc27bf723d8.png?resizew=267)
您最近一年使用:0次
7 . 如图,在四棱锥
中,底面四边形
是矩形,
平面
,
分别是
的中点,
.
(1)求证:
平面
;
(2)求二面角
的大小;
(3)若
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac4ee9a98647379757a6f643fb73438.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f6967901d6c855864df01e7bf7a15c.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d46554105150391e671609fc6348a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf12905647aeeded72bbca21a63f319.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d9f756419912dd298a0d6857130c80.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553d0677313f0e93008bc0c728060074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2017-11-14更新
|
953次组卷
|
4卷引用:天津市和平区2017-2018学年高二上学期期中质量调查数学试题
天津市和平区2017-2018学年高二上学期期中质量调查数学试题重庆市南岸区2019-2020学年高二上学期期末数学试题吉林省长春市长春外国语学校2022-2023学年高一下学期6月月考数学试题(已下线)专题训练:空间线线角、线面角、面面角求解精练30题-同步题型分类归纳讲与练(人教A版2019必修第二册)
解题方法
8 . 如图,在四棱锥
中,
底面
,底面
是直角梯形,
,
,
是
上的一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/13/317ae1a1-a491-4317-84ab-065a82998917.png?resizew=240)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/13/018ec5bd-d0f2-4f57-b41a-5027fe0167b4.png?resizew=244)
(1)求证:平面
平面
;
(2)如图(1),若
,求证:
平面
;
(3)如图(2),若
是
的中点,
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0465d52848d924b0576172c9b22a831.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fd3c2e2199cd4565c05b949bc21fc37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87827211113fd8f5d1afd793927222d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/13/317ae1a1-a491-4317-84ab-065a82998917.png?resizew=240)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/13/018ec5bd-d0f2-4f57-b41a-5027fe0167b4.png?resizew=244)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/677d1863ff4d8ac1604b18149d4f320f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)如图(1),若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceca6155563238c77dee3fdc735637b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36222db36e348661eb5f616820e4e60f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
(3)如图(2),若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2899e607479d8d1c47d954ae9ebb7144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5102c216393e133fa25dba98cd78535.png)
您最近一年使用:0次
9 . 如图,在多面体
中,四边形
是正方形,
∥
,
,
,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/250fa802-944a-42b5-b46d-ece004f46350.png?resizew=267)
(Ⅰ)求证:
∥平面
;
(Ⅱ)求证:
平面
;
(Ⅲ)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0999b7498a6336a22a79d18958c015c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6034301fc4110da89bdb0f46ad82ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05dbd3592cbe9d7298a30f19c20c5a8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c114237f609956017bc72f4971d5b375.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/250fa802-944a-42b5-b46d-ece004f46350.png?resizew=267)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/466fabcaac59132fea648ff35342ec9d.png)
(Ⅱ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/466fabcaac59132fea648ff35342ec9d.png)
(Ⅲ)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/053932dc8c5eebbc739256cb4de6c71d.png)
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2016-11-30更新
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1550次组卷
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6卷引用:天津市耀华中学2017届高三第二次校模拟考试数学(理)试题
天津市耀华中学2017届高三第二次校模拟考试数学(理)试题2010年普通高等学校招生全国统一考试(安徽卷)数学试题(理科)(已下线)【新东方】高中数学20210323-007【高二下】(已下线)模块二 专题2 利用空间向量解决不方便建立坐标系的方法 期末终极研习室(高二人教A版)黑龙江省鸡西市密山市高级中学联考2023-2024学年高二上学期12月期末数学试题山东省潍坊市临朐县第一中学2023-2024学年高二上学期期末模拟数学试题
10 . 如图,在四棱锥
中,底面
是矩形.已知
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/ca4e64ae-d14a-4684-b7a6-b43e69b92361.png?resizew=146)
(Ⅰ)证明
平面
;
(Ⅱ)求异面直线
与
所成的角的大小;
(Ⅲ)求二面角
的大小.
![](https://img.xkw.com/dksih/QBM/2010/4/1/1569688487706624/1569688630018048/STEM/7e1b5ac446dd4ad79b80f336aed4c3de.png)
![](https://img.xkw.com/dksih/QBM/2010/4/1/1569688487706624/1569688630018048/STEM/ccd3c2c2b43644f6a32e7a078815efa3.png)
![](https://img.xkw.com/dksih/QBM/2010/4/1/1569688487706624/1569688630018048/STEM/288b0bea33cf4320af068342be222a6e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/ca4e64ae-d14a-4684-b7a6-b43e69b92361.png?resizew=146)
(Ⅰ)证明
![](https://img.xkw.com/dksih/QBM/2010/4/1/1569688487706624/1569688630018048/STEM/099204761f1e48659276013e698d6eec.png)
![](https://img.xkw.com/dksih/QBM/2010/4/1/1569688487706624/1569688630018048/STEM/1cdd7004ad79445cb432e2d4aa914500.png)
(Ⅱ)求异面直线
![](https://img.xkw.com/dksih/QBM/2010/4/1/1569688487706624/1569688630018048/STEM/25d0d54224c24588b123e89bf4d092ff.png)
![](https://img.xkw.com/dksih/QBM/2010/4/1/1569688487706624/1569688630018048/STEM/8c022303c8134ef4857c79cdaa8cc7bd.png)
(Ⅲ)求二面角
![](https://img.xkw.com/dksih/QBM/2010/4/1/1569688487706624/1569688630018048/STEM/5de2e71fb363459db4db522a7bb8a9ca.png)
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2019-01-30更新
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4卷引用:2008年普通高等学校招生全国统一考试理科数学(天津卷)
2008年普通高等学校招生全国统一考试理科数学(天津卷)2008年普通高等学校招生全国统一考试文科数学(天津卷)(已下线)2010-2011年广西桂林中学高二下学期期中考试数学(已下线)2011-2012学年上海市吴松中学高二年级期终考试数学